Yiwu Weather in September

September in Yiwu, located in Zhejiang Province, marks the transition from the hot, humid summer to the more temperate autumn. This month is characterized by gradually cooling temperatures, reduced rainfall, and more comfortable humidity levels. The weather conditions in September make it an ideal time for visitors to explore the city and for business activities to flourish.

Weather Overview

September in Yiwu, China, offers a pleasant transition from the hot, humid summer to the more temperate autumn. The average temperature ranges from 20°C (68°F) to 29°C (84°F), with warm daytime temperatures and cooler nights. The city experiences around 100 mm (3.9 inches) of rainfall spread over 11 to 13 days, with moderate to high humidity levels ranging from 75% to 85%. Despite shorter daylight hours, Yiwu enjoys ample sunshine, making it a favorable time for both business and leisure activities. Light to moderate winds from the northeast contribute to the overall comfortable climate. Whether you are visiting for business or pleasure, September offers a balanced blend of favorable weather conditions to explore and enjoy Yiwu.

Year Average Temperature (°C) Precipitation (mm) Sunny Days
2012 26.5 85.6 12
2013 26.6 89.3 12
2014 26.8 94.5 11
2015 26.8 74.2 12
2016 27.0 79.8 11
2017 27.2 66.7 13
2018 27.2 64.3 13
2019 27.0 74.1 12
2020 27.4 60.8 13
2021 27.2 76.3 11
2022 26.7 83.7 11


Average Temperature

September experiences a noticeable decrease in temperature compared to the peak summer months. The average temperature ranges from approximately 20°C (68°F) to 29°C (84°F), offering a more comfortable climate for both residents and visitors.

Daytime and Nighttime Temperature

  • Daytime: Daytime temperatures are still relatively warm, ranging from 26°C (79°F) to 29°C (84°F). The warmth of the sun makes it suitable for outdoor activities, but it is less intense than in the summer months.
  • Nighttime: Nighttime temperatures drop to a cooler range, averaging between 20°C (68°F) and 22°C (72°F). The cooler nights provide a refreshing break from the daytime warmth, making evenings more pleasant.



September sees a reduction in rainfall compared to the summer monsoon months. The average rainfall is about 100 mm (3.9 inches), spread over approximately 11 to 13 days. While rainfall is still relatively frequent, it usually occurs in shorter, less intense showers that do not significantly disrupt daily activities.


Humidity levels in September remain moderate to high, ranging from 75% to 85%. However, the decrease in temperature compared to summer makes the humidity more bearable. The combination of reduced rainfall and moderate humidity creates a more comfortable environment overall.

Sunshine and Daylight

Daylight Hours

As autumn approaches, daylight hours begin to shorten. The sun rises around 5:30 AM and sets around 6:00 PM, providing Yiwu with approximately 12.5 hours of daylight each day. The gradually shortening days signal the approach of the cooler autumn season.


Despite the shorter days, Yiwu enjoys a good amount of sunshine in September. Clear and sunny days are common, providing ample opportunities for outdoor activities and sightseeing. The bright sunshine helps to warm the air, balancing out the cooler nighttime temperatures.


Wind Speed and Direction

The wind in Yiwu during September is generally light to moderate, with an average speed of about 10 km/h (6 mph). The predominant wind direction is from the northeast, bringing slightly cooler and drier air from inland areas. Occasionally, stronger gusts may occur, particularly during thunderstorms, but they are usually short-lived.

Activities and Recommendations

Outdoor Activities

September is a great month for exploring Yiwu’s outdoor attractions, such as parks, markets, and historical sites. The moderate temperatures and frequent sunshine make it an ideal time for walking tours and other outdoor recreational activities.

Clothing Recommendations

Given the warm daytime temperatures and cooler nights, it is advisable to wear light, breathable clothing during the day and to have a light jacket or sweater for the evenings. Comfortable walking shoes are recommended for exploring the markets and other outdoor areas.

Yiwu Weather in September

Sourcing Products in Yiwu During September

For individuals looking to source products in Yiwu during September, there are several factors to consider in addition to the weather conditions. As the city transitions to autumn, businesses may experience shifts in activity levels and consumer demand. It’s essential to stay informed about market trends and seasonal changes in demand to make strategic decisions about product sourcing and inventory management.

Additionally, September may see the resumption of business activities following the summer vacation period. It’s important for individuals sourcing products in Yiwu to re-establish communication with suppliers and assess any changes in production schedules or lead times. By staying proactive and engaged, businesses can ensure the smooth continuation of product sourcing efforts during this time.

Furthermore, as the weather becomes milder in September, businesses may have opportunities to explore outdoor marketing and promotional activities. Organizing events such as product showcases or customer appreciation days can help attract customers and generate interest in products. However, it’s essential to consider logistical considerations and weather-related factors when planning outdoor events.

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